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प्रश्न
Write the role of nitrogenase enzyme in nitrogen fixation?
उत्तर
Nitrogen fixation is the first step in the Nitrogen cycle, during which gaseous nitrogen from the atmosphere is fixed. It required nitrogenase enzyme complex nitrogenase is active only in anaerobic conditions. To create this anaerobic condition, a pigment known as leghaemoglobin is synthesized in the nodules which acts as oxygen scavenger and remove oxygen.
संबंधित प्रश्न
Define chemoautotrophs.
Write a note on nitrogen fixation?
Describe nitrogen cycle.
Explain the following cycle in your own words with a suitable diagram.
Nitrogen cycle.
Long Answer Question:
Explain biological nitrogen fixation with example.
How do human activities affect nitrogen cycle?
Which free living microorganism helps in nitrogen fixation?
When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?
How do vaccines work?
Match Column - I with Column - II.
| Column - I | Column - II | ||
| (a) | Nitrococcus | (i) | Denitrification |
| (b) | Rhizobium | (ii) | Conversion of ammonia to nitrite |
| (c) | Thiobacillus | (iii) | Conversion of nitrite to nitrate |
| (d) | Nitrobacter | (iv) | Conversion of atmospheric nitrogen to ammonia |
Choose the correct answer from the options given below.
______ is the primary nutrient, important for the survival of all living organisms.
The bacteria present in the root nodules of leguminous plants is ______.
The blue-green algae that take part in nitrogen fixation are also called ______.
Assertion (A): Plants and animals can utilize atmospheric nitrogen.
Reason (R): The atmosphere is a rich source of nitrogen.
What is nitrification?
Name any two nitrifying bacteria in soil.
Consider the following statements. Which of the statements given below is incorect?
